Enjoy your trip Metchosin, I don't know about a Folk Festival centred on Denholm but it does host a Folk Club out of the Cross Keys. The other pub in the village, The Fox and Hounds, is a hoot, full of some great characters. On top of the Minto Craig was an Peel Tower that celebrated under the name of 'Fatlips' Castle. It was up for sale a few years ago, I'd appreciate a quick line as to its fate.